Adaptive Parking Warning Threshold Based on Vehicle Speed
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Solution Overview
Problem
Existing parking assistance systems often provide inaccurate warnings due to not adequately accounting for the vehicle's intrinsic speed and relative speed, leading to warnings that may be too early or too late, which can compromise driver comfort and safety during parking maneuvers.
Innovation Solution
A parking assistance system that measures the distance and intrinsic speed of a vehicle and adapts a distance threshold value based on these parameters to provide a more precise warning signal, potentially incorporating relative speed and response latency for enhanced safety and comfort, with the ability to automatically engage safety measures if a collision is imminent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed distance threshold value is used for parking assistance warnings, then the system is simple to operate, but the warning timing is inaccurate (too early or too late) for different driving habits and speeds
Solution Approach 1:
The patent applies dynamics by making the distance threshold value adaptive rather than fixed. The system dynamically adjusts the threshold based on the vehicle's current speed, allowing the warning distance to vary with driving conditions. This resolves the contradiction by enabling precise warning timing across different speeds without requiring multiple fixed threshold systems
Solution Approach 2:
The patent changes the parameter of distance threshold based on another parameter (vehicle speed). By establishing a relationship where the warning distance threshold is a function of vehicle speed, the system achieves accurate warning timing for different driving habits while maintaining a simple computational approach that doesn't significantly increase system complexity
2Measurement precision
If the distance threshold is adapted based on vehicle speed, then warning precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements parameter changes by adapting the distance threshold value based on vehicle speed measurements. The system uses the existing speed sensor data and applies a computational adjustment to the threshold, achieving improved warning precision without adding complex hardware or sophisticated algorithms
Solution Approach 2:
The system uses feedback from the vehicle's speed sensor to continuously adjust the distance threshold. By incorporating real-time speed information into the threshold calculation, the system maintains accurate warning timing while using a straightforward feedback mechanism that doesn't significantly increase overall system complexity
3Reliability
If warnings are issued earlier to improve safety, then driver comfort decreases due to excessive early warnings
Solution Approach 1:
The patent adjusts the warning distance parameter based on vehicle speed, allowing the system to issue warnings at appropriate distances for each speed level. This prevents excessive early warnings at low speeds while maintaining adequate safety margins at higher speeds, thus balancing safety and driver comfort
Solution Approach 2:
By making the warning threshold dynamic and speed-dependent, the system adapts its safety margins to actual driving conditions. This prevents the discomfort of excessive early warnings at low speeds while maintaining appropriate safety warnings when needed, resolving the contradiction between safety and comfort
Data Source
AI summary
A parking assistance system is provided for a motor vehicle, with a sensor device which is configured to measure a distance of the motor vehicle from an object and an intrinsic speed of the motor vehicle, with a warning device, which is configured to compare the measured distance with a distance threshold value and to output a warning signal if the measured distance drops below the distance threshold value. The warning device is configured to adapt the distance threshold value taking the measured intrinsic speed into account. Furthermore, a method is provided for operating a parking assistance system, a computer program, a computer-readable medium and a motor vehicle.